Notification does not open the fragment?

Question

I created a Notification and I want it to open a Fragment when clicked. It works in general, but when I have another Fragment open in my application at the time, it does not work.

For example, I have two Fragments: NoticiaFrag and EventoFrag. If I open my application and open the NoticiaFrag after pressing the home button of the device to minimize the application and receiving a notification to EventoFrag, when I click the notification opens NoticiaFrag and not EventoFrag.

To make this work I need close the application with the back button. After the application closes it works fine. I think I need to reopen the application when I click the Notification, but I don't know how.

The method that opens the Fragments from the Notification is in CustomDrawerLayout and called openFrag().

How can I solve this issue?

Notification

public class SendNotification {

     public SendNotification(Context context, String title, String tickerText, String message, String url) {
            NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
            PendingIntent contentIntent;

            Intent intent = new Intent(context, CustomDrawerLayout.class);

            Bundle bd = new Bundle();
            bd.putString("url", url);
            intent.putExtras(bd);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |  Intent.FLAG_ACTIVITY_SINGLE_TOP);

            contentIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
                    .setSmallIcon(R.drawable.logo)
                    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                    .setTicker(tickerText)
                    .setContentTitle(title)
                    .setShowWhen(true)
                    .setWhen(System.currentTimeMillis())
                    .setContentText(message);

            mBuilder.setContentIntent(contentIntent);

            Notification notification = mBuilder.build();
            notification.flags |= Notification.FLAG_AUTO_CANCEL;
            notification.vibrate = new long[]{150, 300, 150, 600};
            mNotificationManager.notify(AndroidSystemUtil.randInt(), notification);        
        }
    }

Manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="br.com.ferpapps.santaluzapp" >

    <!--Internet -->
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <!--GCM Permissions -->
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <permission      android:name=".permission.C2D_MESSAGE" android:protectionLevel="signature" />
    <uses-permission android:name=".permission.C2D_MESSAGE" />
    <uses-permission android:name="android.permission.VIBRATE"></uses-permission>
    <!---->

    <!-- permissoes extra -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>


    <application
        android:name=".cv.CustomVolleySingleton"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"
        >

        <!-- GCM -->
        <receiver
            android:name=".push.GcmBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <category android:name="br.com.ferpapps" />
            </intent-filter>
        </receiver>
        <meta-data android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
        <service
            android:name=".push.GcmIntentService" >
        </service>
        <!-- close GCM -->


        <activity
            android:name=".act.SplashView"
            android:label="@string/app_name"
            android:windowSoftInputMode="adjustPan|adjustResize">

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity android:name=".menu.CustomDrawerLayout"/>
        <activity android:name=".act.AreaAlunoMainActivity" />

    </application>
</manifest>

ActionBarActivity

public class CustomDrawerLayout extends ActionBarActivity implements OnItemClickListener{
    private ActionBar ab;
    private DrawerLayout dl;
    private ListView lv;
    private ActionBarDrawerToggle tg;
    private LinearLayout navdrawer;

    private List<ItensListView> fragments;
    private CharSequence tl; //titulo principal
    private CharSequence tlf; //titulo fragment

    public static final String APP_NAME = "App";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_drawerlayout);
        getSupportActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.action_bar)));
        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        getSupportActionBar().setCustomView(R.layout.actionbar_custom);

        init();

        openFrag();
    }

    private void openFrag(){
        //verifica notificacao e abre o fragment correspondente
        String url = getIntent().getStringExtra("url") != null ? getIntent().getStringExtra("url") : null;
        Log.i("URL_NOTIFICACAO->", url != null ? url : "");
        if(url != null) {
            //Open By Notification
            if (url.equals("Noticias")) {
                selectedItem(0);
            } else if (url.equals("Eventos")) {
                selectedItem(1);
            } else if (url.equals("Tarefas") ||
                    url.equals("Advertencias") ||
                    url.equals("Agendas")) {
                Log.i("Notificacao", url);
                Log.i("LOGADO NA SESSION", SessionUsuario.isLogged(this) + "");

                if(SessionUsuario.isLogged(this)){
                    Log.i("Notificao Logado", "esta logado na area do aluno");
                    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
                    Fragment frag = AreaAlunoFrag.newInstance();
                    frag.getArguments().putString("url", url);
                    ft.replace(R.id.fl, frag);
                    ft.addToBackStack(APP_NAME);
                    ft.commit();
                }
            }
        }else{
            Log.i("ENTREI FIRST FRAG->","ENTREEIII");
            //if(savedInstanceState == null){
                selectedItem(0);
            //}
        }
    }

    private void init(){
        //actionbar
        onConfigActionBar();
        //listview
        configItensListView();
        //drawerlayout
        dl = (DrawerLayout)findViewById(R.id.dl);
        navdrawer = (LinearLayout)findViewById(R.id.navdrawer);
        //listview
        lv = (ListView)findViewById(R.id.lv);               
        lv.setAdapter(new DrawerLayoutListViewAdapter(this, fragments));
        lv.setOnItemClickListener(this);
        //drawerlayout
        //dl = (DrawerLayout)findViewById(R.id.dl);
        //mDrawerRelativeLayout = (RelativeLayout)findViewById(R.id.left_drawer);
        //actionbardrawertoggle
        tg = new ActionBarDrawerToggle(this, dl, R.drawable.ic_launcher, R.string.drawer_open){
            public void onDrawerClosed(View view) {
                ab.setTitle(tl);
                supportInvalidateOptionsMenu();
            }

            public void onDrawerOpened(View view) {
                ab.setTitle(tlf);
                supportInvalidateOptionsMenu();
            }
        };
        dl.setDrawerListener(tg);
        tl = tlf = getTitle();
    }

    /** ativa actionbar e botao home na action bar */
    private void onConfigActionBar(){
        ab = getSupportActionBar();
        ab.setDisplayHomeAsUpEnabled(true);
        ab.setHomeButtonEnabled(true);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        tg.onConfigurationChanged(newConfig);
    }

    /** necessario */
    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        tg.syncState();
    }


     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         if (tg.onOptionsItemSelected(item)) {
                return true;
         }
         return super.onOptionsItemSelected(item);
     }

     /** necessario */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.custom_drawer_layout, menu);
        return true;
    }

    /** necessario */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean status = dl.isDrawerOpen(navdrawer);
        //menu.findItem(R.id.action_settings).setVisible(!status);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
        Log.i("POSITION->", position + "");
        selectedItem(position);     
    }

    /** seleciona o fragment q sera usado */
    private void selectedItem(int position){
        FragmentTransaction ft;
        Fragment frag;
        switch (position){
            case 0:
                ft = getSupportFragmentManager().beginTransaction();
                frag = NoticiaFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 1:
                ft = getSupportFragmentManager().beginTransaction();
                frag = EventoFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 2:
                ft = getSupportFragmentManager().beginTransaction();
                frag = LoginFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 3:
                ft = getSupportFragmentManager().beginTransaction();
                frag = ContatoFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 4:
                ft = getSupportFragmentManager().beginTransaction();
                frag = CompartilhaFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 5:
                ft = getSupportFragmentManager().beginTransaction();
                frag = SobreFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            default:
                closeApp();
                break;
        }
        lv.setItemChecked(position, true);
        setCustomTitle(fragments.get(position).getTexto());
        dl.closeDrawer(navdrawer);
    }

    /** define o titulo da actionbar */
    private void setCustomTitle(String title){
        //SpannableString s = new SpannableString(title);
       // s.setSpan(new TypefaceSpan(this, BatalhaConfigs.FONT), 0, s.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        //ab.setTitle(s);
        //tl = s;
    }

    @Override
    public void onBackPressed() {
        //if(getSupportFragmentManager().getBackStackEntryCount() > 0){
        //    getSupportFragmentManager().popBackStackImmediate();
       // }else{
            super.onBackPressed();
        //}
    }

    @Override
    protected void onResumeFragments() {
        super.onResumeFragments();
    }

    /** Configura o List com as informacoes **/
    private void configItensListView(){
        fragments = new ArrayList<ItensListView>();
        //define
        ItensListView itens0 = new ItensListView("Noticias", R.drawable.setavermelha);
        ItensListView itens1 = new ItensListView("Eventos", R.drawable.setavermelha);
        ItensListView itens2 = new ItensListView("Área do Aluno", R.drawable.setavermelha);
        ItensListView itens3 = new ItensListView("Contato", R.drawable.setavermelha);
        ItensListView itens4 = new ItensListView("Redes Sociais", R.drawable.setavermelha);
        ItensListView itens5 = new ItensListView("Sobre", R.drawable.setavermelha);
        ItensListView itens6 = new ItensListView("Sair", R.drawable.setavermelha);

        //add
        fragments.add(itens0);
        fragments.add(itens1);
        fragments.add(itens2);
        fragments.add(itens3);
        fragments.add(itens4);
        fragments.add(itens5);
        fragments.add(itens6);

        //AreaAlunoFrag
    }

    private void closeApp(){
        System.exit(0);
    }

    @Override
    public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
        //super.onSaveInstanceState(outState, outPersistentState);
        getSupportFragmentManager().beginTransaction().commitAllowingStateLoss();
    }

    private void removeAllFrags(){
        FragmentManager fm = getSupportFragmentManager();
        for(int x = 0; x < fm.getBackStackEntryCount(); x++){
            //getSupportFragmentManager().beginTransaction().remove(fm.findFragmentById(x)).commit();
            fm.popBackStackImmediate();
        }
    }

    @Override
    protected void onStart() {
        new SendProjectId(getApplicationContext());
        super.onStart();
    }

    @Override
    protected void onResume() {
        PushControl.setIsVisible(true);
        new SendProjectId(getApplicationContext());
        super.onResume();
    }

    @Override
    protected void onPause() {
        PushControl.setIsVisible(false);        
        super.onPause();
    }

    @Override
    protected void onStop() {
        PushControl.setIsVisible(false);
        //removeAllFrags();
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        PushControl.setIsVisible(false);
        super.onDestroy();
        CustomVolleySingleton.getInstance().cancelPendingRequests(CustomVolleySingleton.TAG);
    }

}

Update CustomDrawerLayout and Manifest - It works fine.

CustomDrawerLayout

public class CustomDrawerLayout extends ActionBarActivity implements OnItemClickListener{
    private ActionBar ab;
    private DrawerLayout dl;
    private ListView lv;
    private ActionBarDrawerToggle tg;
    private LinearLayout navdrawer;

    private List<ItensListView> fragments;
    private CharSequence tl; //titulo principal
    private CharSequence tlf; //titulo fragment

    public static final String APP_NAME = "App";
    private static String URL_NOTIFICATION = "";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_drawerlayout);
        getSupportActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.action_bar)));
        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        getSupportActionBar().setCustomView(R.layout.actionbar_custom);

        init();

        if(savedInstanceState == null){
           selectedItem(0);
        }
    }

    /** open fragment by notification */
    private void openFragByNotification(){

        if(!URL_NOTIFICATION.isEmpty()) {
            //Open By Notification
            if (URL_NOTIFICATION.equals("Noticias")) {
                selectedItem(0);
            } else if (URL_NOTIFICATION.equals("Eventos")) {
                selectedItem(1);
            } else if (URL_NOTIFICATION.equals("Tarefas") ||
                    URL_NOTIFICATION.equals("Advertencias") ||
                    URL_NOTIFICATION.equals("Agendas")) {
                Log.i("Notificacao", URL_NOTIFICATION);
                Log.i("LOGADO NA SESSION", SessionUsuario.isLogged(this) + "");

                if(SessionUsuario.isLogged(this)){
                    Log.i("Notificao Logado", "esta logado na area do aluno");
                    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
                    Fragment frag = AreaAlunoFrag.newInstance();
                    frag.getArguments().putString("url", URL_NOTIFICATION);
                    ft.replace(R.id.fl, frag);
                    ft.addToBackStack(APP_NAME);
                    ft.commit();
                }
            }
        }
    }


    private void init(){
        //actionbar
        onConfigActionBar();
        //listview
        configItensListView();
        //drawerlayout
        dl = (DrawerLayout)findViewById(R.id.dl);
        navdrawer = (LinearLayout)findViewById(R.id.navdrawer);
        //listview
        lv = (ListView)findViewById(R.id.lv);               
        lv.setAdapter(new DrawerLayoutListViewAdapter(this, fragments));
        lv.setOnItemClickListener(this);
        //drawerlayout
        //dl = (DrawerLayout)findViewById(R.id.dl);
        //mDrawerRelativeLayout = (RelativeLayout)findViewById(R.id.left_drawer);
        //actionbardrawertoggle
        tg = new ActionBarDrawerToggle(this, dl, R.drawable.ic_launcher, R.string.drawer_open){
            public void onDrawerClosed(View view) {
                ab.setTitle(tl);
                supportInvalidateOptionsMenu();
            }

            public void onDrawerOpened(View view) {
                ab.setTitle(tlf);
                supportInvalidateOptionsMenu();
            }
        };
        dl.setDrawerListener(tg);
        tl = tlf = getTitle();
    }

    /** ativa actionbar e botao home na action bar */
    private void onConfigActionBar(){
        ab = getSupportActionBar();
        ab.setDisplayHomeAsUpEnabled(true);
        ab.setHomeButtonEnabled(true);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        tg.onConfigurationChanged(newConfig);
    }

    /** necessario */
    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        tg.syncState();
    }


     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         if (tg.onOptionsItemSelected(item)) {
                return true;
         }
         return super.onOptionsItemSelected(item);
     }



     /** necessario */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.custom_drawer_layout, menu);
        return true;
    }


    /** necessario */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean status = dl.isDrawerOpen(navdrawer);
        //menu.findItem(R.id.action_settings).setVisible(!status);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
        Log.i("POSITION->", position + "");
        selectedItem(position);     
    }

    /** seleciona o fragment q sera usado */
    private void selectedItem(int position){
        FragmentTransaction ft;
        Fragment frag;
        switch (position){
            case 0:
                ft = getSupportFragmentManager().beginTransaction();
                frag = NoticiaFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 1:
                ft = getSupportFragmentManager().beginTransaction();
                frag = EventoFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 2:
                ft = getSupportFragmentManager().beginTransaction();
                frag = LoginFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 3:
                ft = getSupportFragmentManager().beginTransaction();
                frag = ContatoFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 4:
                ft = getSupportFragmentManager().beginTransaction();
                frag = CompartilhaFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            case 5:
                ft = getSupportFragmentManager().beginTransaction();
                frag = SobreFrag.newInstance();
                ft.replace(R.id.fl, frag);
                ft.addToBackStack(APP_NAME);
                ft.commit();
                break;
            default:
                closeApp();
                break;

        }

        lv.setItemChecked(position, true);
        setCustomTitle(fragments.get(position).getTexto());
        dl.closeDrawer(navdrawer);
    }

    /** define o titulo da actionbar */
    private void setCustomTitle(String title){
        //SpannableString s = new SpannableString(title);
       // s.setSpan(new TypefaceSpan(this, BatalhaConfigs.FONT), 0, s.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        //ab.setTitle(s);
        //tl = s;
    }

    @Override
    public void onBackPressed() {
        //if(getSupportFragmentManager().getBackStackEntryCount() > 0){
        //    getSupportFragmentManager().popBackStackImmediate();
       // }else{
            super.onBackPressed();

        //}
    }


    @Override
    protected void onResumeFragments() {
        super.onResumeFragments();
    }

    /** Configura o List com as informacoes **/
    private void configItensListView(){
        fragments = new ArrayList<ItensListView>();
        //define
        ItensListView itens0 = new ItensListView("Noticias", R.drawable.setavermelha);
        ItensListView itens1 = new ItensListView("Eventos", R.drawable.setavermelha);
        ItensListView itens2 = new ItensListView("Área do Aluno", R.drawable.setavermelha);
        ItensListView itens3 = new ItensListView("Contato", R.drawable.setavermelha);
        ItensListView itens4 = new ItensListView("Redes Sociais", R.drawable.setavermelha);
        ItensListView itens5 = new ItensListView("Sobre", R.drawable.setavermelha);
        ItensListView itens6 = new ItensListView("Sair", R.drawable.setavermelha);

        //add
        fragments.add(itens0);
        fragments.add(itens1);
        fragments.add(itens2);
        fragments.add(itens3);
        fragments.add(itens4);
        fragments.add(itens5);
        fragments.add(itens6);


        //AreaAlunoFrag

    }

    private void closeApp(){
        System.exit(0);
    }


    @Override
    public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
        //super.onSaveInstanceState(outState, outPersistentState);
        getSupportFragmentManager().beginTransaction().commitAllowingStateLoss();

    }

    private void removeAllFrags(){
        FragmentManager fm = getSupportFragmentManager();
        for(int x = 0; x < fm.getBackStackEntryCount(); x++){
            //getSupportFragmentManager().beginTransaction().remove(fm.findFragmentById(x)).commit();
            fm.popBackStackImmediate();
        }
    }


    @Override
    protected void onNewIntent(Intent intent) {
        URL_NOTIFICATION = intent.getStringExtra("url");
        Log.i("URL_NOTIFICATION", URL_NOTIFICATION);
        super.onNewIntent(intent);
    }

    @Override
    protected void onStart() {
        new SendProjectId(getApplicationContext());
        super.onStart();
    }

    @Override
    protected void onResume() {
        PushControl.setIsVisible(true);
        new SendProjectId(getApplicationContext());
        openFragByNotification();
        super.onResume();
    }

    @Override
    protected void onPause() {
        PushControl.setIsVisible(false);
        URL_NOTIFICATION = "";
        super.onPause();
    }

    @Override
    protected void onStop() {
        PushControl.setIsVisible(false);
        URL_NOTIFICATION = "";
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        PushControl.setIsVisible(false);
        super.onDestroy();
        CustomVolleySingleton.getInstance().cancelPendingRequests(CustomVolleySingleton.TAG);
    }


}

Manifest

<activity android:name=".menu.CustomDrawerLayout" android:launchMode="singleTop"/>

Answer 1

The problem is that Android by default doesn't deliver a new Intent to an Activity that is already running. If you close your app via the back button, the Activity is destroyed and the next time startActivity() is called a new instance is created and the new Intent delivered. If you leave the Activity via the home button, the Activity is not destroyed. When you call startActivity() in this case, the already running instance of the Activity is brought to the foreground, but a new Intent is not delivered.

To change this behaviour you can define your activity in the manifest with launchMode="singleTop":

<activity
    ...
    android:launchMode="singleTop"
    ...
>
</activity>

In this case Android will deliver a new Intent via onNewIntent(), which you can override:

This is called for activities that set launchMode to "singleTop" in their package, or if a client used the FLAG_ACTIVITY_SINGLE_TOP flag when calling startActivity(Intent). In either case, when the activity is re-launched while at the top of the activity stack instead of a new instance of the activity being started, onNewIntent() will be called on the existing instance with the Intent that was used to re-launch it.

Just noticed the flags you're passing into your Intent. In that case you probably just have to override onNewIntent() in your Activity.

I've run into this problem myself before and asked a question here. There's some more background in that question, the accepted answer, and the comments.